Seagate CEO William Mosley Sells $18.2 Million of Stock Under Trading Plan
Seagate Technology CEO William Mosley sold 30,000 Seagate shares for $18.21 million on Nov. 2, 2026, under a prearranged trading plan, according to two Form 4 filings Tuesday.
Both filings said the trades were made under a Rule 10b5-1 trading plan Mosley adopted on Feb. 18, 2026.
Part options, part existing shares
Before selling, Mosley exercised options to buy 14,000 Seagate ordinary shares at $46.23 each, the first filing shows. Those options were set to expire on Sept. 9, 2027, and he still holds 69,100 options from that grant.
He then sold 30,000 shares in dozens of trades, more than twice the number he acquired through the exercise. The sales came at weighted average prices ranging from $587.99 to $644.43, for an overall average of $607.00 per share.
The first filing covered 23,280 shares sold for $14.02 million, and the second covered 6,720 shares sold for $4.19 million.
What he still holds
After the sales, Mosley directly owns 346,108.25 Seagate shares, according to the filings.
By the numbers
- Shares sold: 30,000
- Sale proceeds: $18,210,114
- Average sale price: $607.00
- Options exercised: 14,000 at $46.23
- 10b5-1 plan adopted: Feb. 18, 2026
- Shares owned directly after: 346,108.25
Sources
- Form 4 filed by Seagate CEO William Mosley (sales of 23,280 shares), filed Nov. 3, 2026 (accession 0001137789-26-000317)
- Form 4 filed by Seagate CEO William Mosley (sales of 6,720 shares), filed Nov. 3, 2026 (accession 0001137789-26-000318)
This article is for informational and educational purposes only and is not investment advice. It is not a recommendation to buy or sell any security.
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